﻿#region Copyright
// Copyright (c) 2011-2012 RaisingForce Team (Alikin Sergey)
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#endregion

using System;

namespace RaisingForce.Raise.Measures
{
    sealed internal class TimeProvider :
        PositiveDoubleMeasureProvider<ITimeMeasure, TimeProvider>
    {
        #region Constructors

        private TimeProvider()
            : base()
        { }

        #endregion

        #region Base Overrides

        protected override ITimeMeasure DefaultMeasure
        {
            get { return TimeMeasures.Second; }
        }

        protected override ITimeMeasure InvariantMeasure
        {
            get { return TimeMeasures.Second; }
        }

        protected override string GetString(
            DoubleMeasureValue<ITimeMeasure> value,
            string format,
            IFormatProvider formatProvider)
        {
            double valueInSecondMeasure =
                this.Get(value, TimeMeasures.Second);
            ITimeMeasure usingMeasure =
                valueInSecondMeasure < 0.1d ?
                TimeMeasures.Millisecond :
                valueInSecondMeasure >= HourTimeMeasure.SecondsInHour ?
                TimeMeasures.Hour :
                valueInSecondMeasure >= MinuteTimeMeasure.SecondsInMinute ?
                TimeMeasures.Minute :
                TimeMeasures.Second;
            double valueInUsingMeasure = this.Get(value, usingMeasure);
            string valueString =
                this.GetValueString(
                    valueInUsingMeasure,
                    format ?? "F1",
                    formatProvider);
            return string.Concat(valueString, " ", usingMeasure.ShortName);
        }

        protected override double EpsilonInvariantValue
        {
            get
            {
                return 1.0e-6d;
            }
        }

        #endregion
    }
}
